| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | tipping | Mainland US | Customary to tip 15-20% at restaurants | 1 |
| 2 | tipping | United States Mainland | Tipping for good service at restaurants is customary, and it is generally expected to leave a gratuity of around 15-20%. | 1 |
| 3 | tipping in restaurants | Mainland United States | Customary to leave a tip of 15-20% of the bill | 1 |